Question
In the remote control of Television Receivers, what type
of electromagnetic radiation is employed?Solution
TV remote controls use infrared (IR) radiation to send signals. The remote contains an LED light that flashes quickly to send messages, which the TV receives via its built-in infrared receiver. This is why infrared radiation is used for TV remotes.
Simple interest earned on an amount of Rs. 1000 at rate of R% per annum after 4 years is Rs. 280. Find the simple interest earned on an amount of Rs. 15...
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2400 after 3 years. If the same amount is investe...
Rs. 2500 is invested in scheme ‘A’ for a year at simple interest of 25% p.a. The interest received from scheme ‘A’ is reinvested for 2 years in ...
A man invested certain sum at simple interest of r% p.a. such that it amounts to 122% of itself in 5 years. Find the interest earned when Rs. 3000 is in...
What sum of money must be given at simple interest for 8 months at 3% per annum in order to earn Rs. 260 interest?
A certain sum amounts to ₹13200 after 4 years and to ₹16400 after 8 years at the same rate percent p.a. at simple interest. The simple interest (in ...
Compound interest on a certain sum of money for 2 years is Rs.3600 while the simple interest on the same sum for the same time period is Rs.3200. Find t...
Simple interest earned on an amount of Rs. 2000 at rate of R% per annum after 4 years is Rs. 288. Find the simple interest earned on an amount of Rs. 15...
The difference between the simple and compound interest compounded annually of a sum at 12% p.a. for 2 years is Rs. 180. Find the sum.
Mr. P invested Rs. ‘10x’ in scheme ‘A’ offering simple interest of 20% p.a. and reinvested the interest earned from scheme ‘A’ at the end of...
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